Update CHANGELOG.md (#320)

CHANGELOG.md

@@ -1,3 +1,20 @@
+## 0.2.1 (August 1, 2016)
+
+### Build Dependency (`react-scripts`)
+
+* Fixes an issue with `npm start` taking a very long time on OS X with Firewall enabled ([@gaearon](https://github.com/gaearon) in [#319](https://github.com/facebookincubator/create-react-app/pull/319))
+* Fixes an issue with Webpack eating a lot of CPU in some cases ([@dceddia](https://github.com/dceddia) in [#294](https://github.com/facebookincubator/create-react-app/pull/294))
+* We now warn if you import a file with mismatched casing because this breaks the watcher ([@alexzherdev](https://github.com/alexzherdev) in [#266](https://github.com/facebookincubator/create-react-app/pull/266))
+* CSS files specifying `?v=` after asset filenames, such as Font Awesome, now works correctly ([@alexzherdev](https://github.com/alexzherdev) in [#298](https://github.com/facebookincubator/create-react-app/pull/298))
+* Issues with `npm link`ing `react-scripts` have been fixed ([@dallonf](https://github.com/dallonf) in [#277](https://github.com/facebookincubator/create-react-app/pull/277))
+* We now use `/static` prefix for assets both in development and production ([@gaearon](https://github.com/gaearon) in [#278](https://github.com/facebookincubator/create-react-app/pull/278))
+
+### Migrating from 0.2.0 to 0.2.1
+
+Update `react-scripts` to point to `0.2.1` in your `package.json` and run `npm install`. You shouldn’t need to do anything else. If you see a warning about wrong file casing next time you `npm start`, fix your imports to use the correct filename casing.
+
+Newly created projects will use `0.2.1` automatically. You **don’t** need to update the global `create-react-app` CLI itself. It stays at `0.2.0` for now because it doesn’t have any changes.
+
 ## 0.2.0 (July 28, 2016)
 
 ### Build Dependency (`react-scripts`)